I am not able to get CA1S running with GA CICS TS V4.1, Java 6 SR4, and z/OS 1.10.
On the same z/OS I can successfully run CA1S with CICS TS V3.2, Java 5 SR8.
With -verbose:class the following messages are after the attempt to load PHPDouble:
Type=Floating point error vmState=0x00000000
..... more .....